Select a correct description of distributing arteries. Select one: a. They contain a thick tunica media. b. They contain a lot of elastic tissue. c. They transport blood from arterioles to capillaries. d. They do not contain smooth muscle in their walls. e. They are strong, rigid vessels.

Option A, They contain a thick tunica media

Explanation:

Artery consist of tunics which is made up of three distinct layers  

a)The internal layer is tunica intima – made up of epithelial and connective tissue layers

b)The middle layer is tunica media - thickest layer in arteries and consists of layers of smooth muscle supported by connective tissue

c)The external layer is tunica externa - sheath of connective tissue composed primarily of collagenous fibers

identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.

it would lead to upper respiratory infections and pneumonia.